Final Answer:
(a) The bias in the survey is best described as Nonresponse bias.
(b) To remedy the bias, the polling organization should employ strategies to increase the response rate, such as follow-up contacts and incentives for participation.
Step-by-step explanation:
Type of Bias (a): The best description of the bias in the survey is Nonresponse bias. This bias occurs when respondents selected for the survey differ systematically from those who do not respond. In this case, the low response rate (23 out of 1974 households) indicates potential nonresponse bias.
Remedy for Bias (b): To remedy nonresponse bias, the polling organization should implement measures to increase the response rate. This can involve conducting follow-up contacts with non-respondents to encourage participation. Additionally, offering incentives, such as small rewards or emphasizing the importance of the survey, can motivate individuals to respond.